Fix Clippy warnings

Author: EFanZh

src/problem_0048_rotate_image/reverse_then_transpose.rs

@@ -12,6 +12,7 @@ impl Solution {
         for row_plus_1 in 1..n {
             let row = row_plus_1 - 1;
 
+            #[expect(clippy::needless_range_loop, reason = "false positive")]
             for column in row_plus_1..n {
                 let temp = matrix[row][column];
 

src/problem_1203_sort_items_by_groups_respecting_dependencies/topological_sorting.rs

@@ -4,18 +4,14 @@ pub struct Solution;
 
 use std::{iter, mem};
 
+#[derive(Default)]
 enum State {
+    #[default]
     NotVisited,
     Visiting,
     Visited,
 }
 
-impl Default for State {
-    fn default() -> Self {
-        Self::NotVisited
-    }
-}
-
 impl Solution {
     fn dfs(graph: &[Vec<i32>], node: usize, states: &mut [State], result: &mut Vec<i32>) -> bool {
         for &dependency in &graph[node] {